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Figure above shows the geometry of such a case.

Strategy for Creating Geometry

To model this flow, we need a cylinder and farfield boundaries. We need finer meshes around the cylinder to capture the active region (call this radius of influence). Downstream of the flow, there will be wake generated by the cylinder, which requires finer mesh to better capture this phenomena. To be able to specify such regions, we split the model domain into different faces as shown below.

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Finally, connect all the remaining vertices KL, LM, NO, OP, FI and GJ.

The newly created vertices to form two new edges. The current geometry in Gambit should look like this:

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